#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <stdarg.h>
#include <string.h>
#include <termios.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "wiringSerial.h"
int myserialOpen(const char *device, const int baud) {
	struct termios options;
	speed_t myBaud;
	int status, fd;
	switch(baud) {
		case 9600:
			myBaud = B9600;
			break;
		case 115200:
			myBaud = B115200;
			break;
	}
	if((fd = open(device, O_RDWR | O_NOCTTY | O_NDELAY | O_NONBLOCK)) == -1)
		return -1;
	fcntl(fd, F_SETFL, O_RDWR);
	// Get and modify current options:
	tcgetattr(fd, &options);
	cfmakeraw(&options);
	cfsetispeed(&options, myBaud);
	cfsetospeed(&options, myBaud);
	options.c_cflag |= (CLOCAL | CREAD);
	options.c_cflag &= ~PARENB;
	options.c_cflag &= ~CSTOPB;
	options.c_cflag &= ~CSIZE;
	options.c_cflag |= CS8;
	options.c_lflag &= ~(ICANON | ECHO | ECHOE | ISIG);
	options.c_oflag &= ~OPOST;
	options.c_cc[VMIN]  = 0;
	options.c_cc[VTIME] = 100;
	// Ten seconds (100 deciseconds)
	tcsetattr(fd, TCSANOW, &options);
	ioctl(fd, TIOCMGET, &status);
	status |= TIOCM_DTR;
	status |= TIOCM_RTS;
	ioctl(fd, TIOCMSET, &status);
	usleep(10000);	// 10mS
	return fd;
}
// 会传递0XAA 0X55 0X46 0x00 0X55 0XAA类似的参数
void serialSendstring(const int fd, const unsigned char *s, int len) {
	int ret;
	ret = write(fd, s, len);
	if(ret < 0)
		printf("Serial Puts Error\n");
}

int serialGetstring(const int fd, unsigned char *buffer) {
	int n_read;
	n_read = read(fd, buffer, 6);
	return n_read;
}